Unit for ventilating systems



Feb. 22 1927.

R. `A. n G

UNIT FOR VENTILATING SYSTEMS Filed June 25, 1926 I l I l i l f. .y ,If l

. IN VEN TOR.

Patented eb. 22,- 1927.

UNITED STATES .1,618,379 PAT/ENT OFFICE.

ROBERTA. ILGLOF CHICAGO, ILLINOIS, ASSLUNOR TO ILG IEI'JEC'IR'IG VENTILATING COMPANY, OF CHICAGO, ILLINOIS, CORPORATION OF LOUISIANA.

'UNIT FOR VENTILATING SYSTEMS.

Application med June 25, 1926. Serial No. 118,409. v

This, invention relates to` apparatus for Ventilating systems, either with or without air heating means, of the general character and type disclosed in Let-ters Patent to John M. Frank No. l, 295,151, dated February 25, 1919, said patent showing a box or casing adapted to be suspended from a ceiling or mounted upon a wall or upon the floor, a

heating element in the rear of said box or l0 casing, a propeller fan drawing air through said casing over said heating element, and means for directing the warmed current of air to the desired locality.

In the aforesaid patent, the fan and its motor are permanently mounted in the open front of the box or casing, and the desired direction of the air current is obtained by means of a deiector plate hinged at the top of the opening andv adapted to-be set at any angle between the horizontal and the vertical so that the air current may be propelled directly forwardly in a horizontal direction or may be deflected downwardly lmore or less, depending upon the position ofthe delectorplate.

' The main object of the present vinvention is to improve the efficiency of unit heaters and ventilators of this type by providing a construction wherein the desired direction of 3 the air current may be obtained without the use of any dei-lector, which latter manifestly presents a frictional check or retardation on the air current which isgreater, the greater the amount of deflection. This object I attain broadly through'/ the provision of a. .hinged front frame on the box or casing on which the fan and preferably its motor are directly mounted, with means for swinging said hinged frame and thereby tiltin axis of the fan 'andA motor between a orizontal position and a more or less downwardly inclined position.

Other objects and attendant advantages of the inventidn will become apparent to r persons skilled in the art as the same' is better understood by reference to the following detailed description, taken in connect-ion with the accompanying drawings'in which I have illustrated one `simple and practical embodiment of the broad novel principle of the invention, and wherein- A,

Fig. 1 is a front elevation of my improved unit ventilator and heater;

Fig. 2 is a sideelevation viewed from the im i right 0f Fig, 1, with the front port,1 0f the the yextends through the fan frame, said pipe side wall of the casing broken away to disclose the fan and motor;

Fig. 3 is an enlarged vertical section through the front portion of the device, showing in full lines the horizontal position of the fan and motor and in dotted lines a forwardly tilting position of said parts; and

Fig. 4 is a detail showing the lock for the panel frame operating chains or cords.

Referring to the drawings, the box or casing herein shown comprises arectangular fra-me formed o-fhorizontalf and vertical angle bars suitably united at their meeting ends, with sheet-metal top, bottom and side walls, and designated as an entirety by 10. This casing is or may be substantially like 'that shown in the `aforesaid Patent No. 1,--

295,l51, and, for greater strength and rigidity, the front and rear portions thereof are preferably connected by tie plates 11. The casing herein shown is adapted to be suspended from the ceiling of a room by suspension bars 12. f i x Suitably attached to the open front of the casing is a V-shaped shield or hood comprising an arcuate top plate 13 and sectorshaped-side walls 14. Mounted as'by hinges 15 on an axis coincident with the lower edge of the shield or hood is a swinging frame or panel 16 formed with a central opening in which is set and secured the an frame 17, this latter being formed withrearwardly and downwardly curved arms 18 connected to or integral with a motor-supporting ring 19, in which is mounted the electric motor 20, the shaft 21 of which directly carries the propeller fan'22 rotating within the -ircular fan frame 17. Connected into the lower side of the motor ring 19 isa vent pipe 23, the upper end of which communicates throughV a hole in the motor ring 19 with the field of the motor, while its otherend serving for theinduction of cooling air .t0 100 the motor through the suction pull of the fan, and also serving as a lower support for the motor ring 19. 24 isa 'hood or casingenclosing 'the motor. 25 designates a junctionbox for the motor circuit conveniently mounted on thebottom Wall of the casing, from which a iexible lead 26 extends through the motor ring 19 into the field of the motor.

From the foregoing it will be seen that 119 ink the Iframe or panel is at the rear of thehood and in the vertical plane of the front wall of the easing to the position shown in dotted lines in the said ligure, wherein the swinging frame is arrested andV supported by inwardly bent top and side flanges 27' and .28 (Fig. l) formed on the top and side walls respectively of the hood or Shield.

Any suitable or convenient means for operating the swinging frame carrying the fan and motor may be employed within the purview of the invention; but I have herein illustrated a siniple system of chains or cords and pulleys for this purpose. ln the upper` portion of the panel 16 is secured an eyebolt 29 to which is attached a chain 30 that extends around a pulley 31 mounted ina bracket 32 attached to the upper front flange 27 of the hood and extending thence over guide pulleys 33 and 34 mounted on a side wall of the casing above the fan and motor and thence downwardly through the-bottom wall of the casing and terminating in a handle 35. This chain or cord serves to etlect the forward swinging or opening movement of the paneh Attached to an eye-bolt 36 on the rear side of the upper portion of the panel is an operating chain or cord 37 that extends over a guide pulley 38 mounted on the side wall of the casing and thence downwardly through the bottom wall of the latter` terminating inl an operating handle 39. This chain serves to eil'ect the. rearward swinging or closing movement of the panel.

The chains 30 and 37 extend through slots 40 and 41 respectively in the horizontal limb of a stop bracket 42 that may be attached to one of the lower vframe bars of the easing, as shown in the detail View, Fig. 4; the links of the chains lying in the vertical planes of the slots entering the latter' and the chains being held against movement by the next overlying and underlying links of the chains, in the manner clearly shown in Fig. 4. To open or close the panel and shift the angular position of the atan-and motor, both handles 35 and 39 are grasped simultaneously, their chains withdrawn from the catch bracket, and one chain pulled at the same time that the other is slaekened.

The device as thus far described is coInplete as a Ventilating apparatus; but in situ ations where it is desirable 4to heat the incoming fresh air the rear portion of the easing is equipped with a heater, herein shown as comprising a group of steam coils or radiators conventionally illustrated at 43, supplied with steam through a pipe 44 and branch pipes 45 leading to the individual coils or radiators, it being understood thatl the rear end of the easing is open, so that the fan acts to draw a current of air over and between the coils by which it is heated.

With further reference to the operating and controlling mechanism of the hinged panel, it may be observed that the tendency of the fan, when rotating at full speed, is to create a back thrust on the fan and motor, 'tending to swing the hinged panel back to vertical position. This is resisted by the chain 30 and the chain catch or lock, so that the fan and motor are positively held and locked in any angular position to which they may be set.

The mode of operation and .utility of the apparatus will be readily apparent from the foregoing description. Where ventilation alone is required, or only a slight degree of heat, the panel is locked in the upright position shown in Fig. 2 and by full lines in Fig. 3, and the current created by the fan is propelled substantially horizontally into the room. Where it may be desired to raise the temperature of the room more quickly, and carry the heat directly to the lower portion of the room, the fan and motor are tilted forwardly more or less,`as indicated by dotted lines in Fig. 3, so that the air current is propelled in a downwardy inclined direction. This, it will be observed, is obtained without the use of any deflector to change the direction of the current, thus avoiding the obstruct-ion and retardation caused by such a deflector.

The V-shaped hood or shield at the front of the casing, through which the hinged panel carrying the vfan and motor swings, is preferably employed because maintaining the integrity of the air current induced by the fan clear up to its point of discharge from Ythe fan; but manifestly this hood or shield might be omitted, especially in situations where it may be desirable not only to induce fresh external air into the room ,but also to agitate and mingle therewith the a1r in the'room itself.

In the drawing and the foregoing description I have set forth one simple 'and practical embodiment of the principle of the invention, the structural details of -which may, of course, be considerably varied without departing from the principle of the invention or sacrificingl any of the benefits and advantages thereof. Hence, I do not limit the invention to the particular form herein presented for purposes of illustration, but reserve all such variations, modifications and mechanical equivalents as fall within the spirit and purview of the appended claims.

1. In a Ventilating apparatus of the type described, the combination of a casing open at its front and rear ends, a panel hinged for said fan, and means for locking said panel in any angularly adjusted position.

2. In a ventilatiiig apparatus of the type described, the combination of a casing open at its front and rear ends, a panel hinged at its lower edge to the lower edge of the forward end of said casing, a propeller fan mounted on said panel, a motor for said fan, and means for swinging said panel and for locking the saine in any angularly adjusted position.

3. In a Ventilating apparatus of the type described, the combination of a casino` open at its front and rear ends, a shieldibrmed with top and side walls attached to the forward end of said casing, a panel hinged to the forward end of said casing adapted to swing through said shield, la propeller fan mounted on said panel, a motor for said fan, and means for locking said panel in any angularly adjusted position.

4. In a Ventilating apparatus of the type described, thecombination of a casing open at its front and rear ends, a. panel hinged at its lower edge to the lower edge of the.

forward end of said casing, a propeller fan mounted on said panel, a motoi' for said fan, operating cords connected to said panel for swinging the latter in both directions, guide pulleys for said cords, and means for locking said cords in any set position of said panel.

5. In a Ventilating apparatus of the type described,y the combination of a casing open at its front and rear ends, a panel hinged to the forward end of said casing and having an opening, a fan and motor frame mounted in said opening, an electric motor and direct-driven propeller fan mounted in said frame, and means for locking said panel in any angularly adjusted position.

6. In a Ventilating apparatus of the type described, the combination of a casing open at its front and rear ends, a shield formed with top and side walls attached to the forward end of said casing, a panel hinged at its lower edge to the lower edge. of the forward end of said casing and adapted to swing through said shield, said panel having an opening,` a :fan and .motor frame mounted in said opening, an electric motor and direct-driven propeller fan mounted in said frame, and means for locking said panel in any angularly adjusted position.

7. In a Ventilating apparatus of the type described, the combination of a casing open at its front and rear ends, a shield formed with top and side walls attached to the forward end of said casing, a-panel hinged lat its lower edge to the lower edge of the forward end of said casing and adapted to swing through said shield, said panel having an opening, a fan and motor frame mounted in said opening, an electric. motor and direct-driven propeller fan mounted in said frame, stops on the forward edge of said shield for supporting said panel in orwardly inclined position, and actuating and controlling means for said panel comprising` operating cords connected to said panel for swinging the latter in both directions, guide pulleys for said cords, and means for loching said cords in any set position oit said panel.

ROBERT A. ILG. 

